It must be yours.改为否定句怎么改啊?是用mustn't be还是用can't
It must be yours.改为否定句怎么改啊?是用mustn't be还是用can't
The book must be Li Ming's (改为否定句) 想说的是要不要把mustn't 改为can't
为什么must be的否定式是can't be而不是mustn't be
将下列句子改成否定句和疑问句,用can,may,must,can't,mustn't,needn't填空
存在can be/must be ,can’t be 而没有mustn't be
九上英语 must的用法、 当用must提问时 否定回答是 it mustn't 这个不对吧 正确的是can't
must 提问 ,否定回答 是用 mustn't 还是 needn't?
Be late for school.改为否定句.You mustn’t play football here.改为祈使
can't be ,mustn't be
this coat isn't yours,whose -----it be 是选MAY 还是CAN
must作为猜测 mustn't还能作为其否定形式,只能用can't be表示不可能了吗
can,can't,must,mustn't,needn't,be allowed to,have to,don't h